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Pacific Walrus Coastal Haulout Occurrences Interpreted from Satellite Imagery

Metadata Updated: October 29, 2023

This data release contains maps, geospatial files, and a table of the satellite imagery types with the dates when they were collected and examined to interpret the presence of, and area occupied by, walruses at terrestrial haulouts. Estimates of the land area occupied by walruses are provided based on interpretation by experienced image reviewers. The images are from a variety of Earth observing satellite imagery sources collected over coastal areas of the Chukchi Sea (northwestern Alaska and northeastern Russia) in autumn when walruses come ashore in large numbers to rest in the absence of sea ice. Earth observing imagery sources used in this data release include (but are not limited to) optical imagery collections by: (1) the European Space Agency's Sentinel-2 mission and (2) the Plant Labs Planet Scope constellation, as well as synthetic aperture radar imagery collected by: (1) European Space Agency's Sentinel-1 mission; (2) the Canadian Macdonald, Dettwiler and Associates (MDA) RADARSAT-2 satellite (C-band); (3) the DLR (German Aerospace Agency) TerraSAR-X satellite (X-band), and (4) the American Capella Space satellite constellation (X-band).

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date June 1, 2023
Metadata Updated Date October 29, 2023

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date October 29, 2023
Publisher U.S. Geological Survey
Identifier USGS:ASC482
Data Last Modified 20221205
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id 937010c4-f54e-4ad6-91be-06bbd77daebd
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -171.7,66.9,-163.0,69.6
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash de6f016631d0b7e15063153f6a7af9daf8dea9bc1749e067c81ed971963c6fc1
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -171.7, 66.9, -171.7, 69.6, -163.0, 69.6, -163.0, 66.9, -171.7, 66.9}

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